User blog comment:Dante-Must-Die-Mode/About: Devil May Cry 4: Special Edition/@comment-1250340-20150326230417/@comment-967403-20150328020522

If I had to guess, I'm thinking this is taking ques from Deadly Fortune novel (the novel claimmed to be non-canon) and having Vergil visit Fortuna years before even DMC4 or even....3. The novel mentioned he traveled to Fortuna and met Sanctus. Now apparenty, it's alligning with that notion in that he was interested in the Order of the Sword and visits according to the official website.

He's also wearing the exact same thing he wore in three and I'm not seeing any changes that says he's older or something along those lines beyond updated graphics on his part.